package com.itheima.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.admin.dto.ChannelPageRequestDto;
import com.itheima.admin.mapper.AdChannelMapper;
import com.itheima.admin.pojo.AdChannel;
import com.itheima.admin.service.AdChannelService;
import com.itheima.common.vo.PageResultVo;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.Date;

/**
 * @version 1.0
 * @description 说明
 * @package com.itheima.admin.service.impl
 */
@Service
public class AdChannelServiceImpl extends ServiceImpl<AdChannelMapper, AdChannel> implements AdChannelService {

    /**
     * 分页查询
     * @param dto
     * @return
     */
    @Override
    public PageResultVo findPage(ChannelPageRequestDto dto) {
        //1. 设置分布参数
        Page<AdChannel> pageInfo = new Page<>(dto.getPage(), dto.getSize());
        //2. 设置查询条件
        LambdaQueryWrapper<AdChannel> lqw = new LambdaQueryWrapper<>();
        lqw.like(!StringUtils.isEmpty(dto.getName()), AdChannel::getName, dto.getName());
        lqw.eq(null != dto.getStatus(), AdChannel::getStatus, dto.getStatus());
        //3. 查询
        IPage<AdChannel> pageResult = page(pageInfo, lqw);
        System.out.println("pageResult==pageInfo? ==> " + (pageInfo==pageResult));
        //4. 构建分页结果返回
        return PageResultVo.pageResult(dto.getPage(),dto.getSize(), pageResult.getTotal(), pageResult.getRecords());
    }

    /**
     * 新增频道
     * @param adChannel
     */
    @Override
    public void add(AdChannel adChannel) {
        adChannel.setIsDefault(true);
        adChannel.setCreatedTime(new Date());
        save(adChannel);
    }
}
